PPI
Pre-Production Inspection
Raw materials and components are verified against your specification before mass production begins, so problems are caught before they multiply.
ISO 9001 CERTIFIED · DUAL-LAYER QC · C2W GROUP · 20 YEARS
Independent quality control, inspection and testing in China.
Verify your product before it ships. Shield Works runs documented inspection at every production stage, backed by independent verification from C2W Group quality engineers who report directly to you.
Quality-Driven Focus
Quality checked at the source, before it ships.
Quality control sits at the centre of how Shield Works operates. We embed ISO-standard procedures across every stage of production, with trained staff monitoring each step against your specification, so defects are caught here in China rather than discovered after they reach you.
Whether the goods are built on our own floor or delivered in from elsewhere, we act as your independent inspector on the ground. Inspection levels, acceptance criteria, and testing parameters are tailored to each product, never forced into a one-size template.
See our ISO certifications
Dual-Layer Verification
Two independent checks, not one.
Most inspection gives you a single opinion, often from the same team that built the goods. Shield Works gives you two, structurally separated, so nothing self-certifies.
Layer 01: Shield Works QC
- Incoming, in-process, and final inspection
- Checked against an agreed inspection plan
- Documented results at every stage
Layer 02: Independent C2W verification
- Verified by a C2W Group quality engineer
- Independent of the production team
- Reported directly to you, not filtered through the factory
Inspection Points
Checked at every stage of the build.
Inspection is not a single gate at the end. We verify your product across the production timeline, from incoming materials to the packed, ready-to-ship order.
DPI
During Production Inspection
In-process checks while products are still on the line, catching defects early enough to correct them rather than scrap a finished batch.
PSI
Pre-Shipment Inspection
A final random inspection to your AQL once the order is complete and packed, confirming the full shipment meets specification before it leaves.
100%
Full Inspection
Item-by-item verification for high-value, safety-critical, or sensitive products where sampling is not enough.
Sort
Defect Sorting & Corrective Action
Defective batches contained, acceptable goods separated, and root-cause corrective action implemented to keep your supply chain moving.
Specialist Testing
Testing what the product does, beyond how it looks.
Inspection confirms a product is built right. Testing confirms it works. We run both, so your product is verified for conformance and performance before it reaches your market.
Functional & durability
- Functional testing
- Life-cycle & stress testing
- Load and fatigue
Electrical & safety
- Electrical safety
- Insulation & leakage
- Continuity checks
Environmental & materials
- Temperature & humidity
- Ingress / water resistance
- Material & finish verification
We work with certified laboratories and maintain in-house testing equipment, so routine checks run on site and accredited testing is arranged when your market requires it.
Certifications
Four international certifications. One facility.
Shield Works is independently certified across three management systems: Quality (ISO 9001), Environmental (ISO 14001), and Occupational Health & Safety (ISO 45001). Also audited annually under SEDEX SMETA, an independent ethical-trade audit covering labour, health and safety, environment, and business ethics.
| Certification | Standard | Accredited By |
|---|---|---|
| ISO 9001 | Quality Management System | BSI ANAB |
| ISO 14001 | Environmental Management System | BSI ANAB |
| ISO 45001 | Occupational Health & Safety | BSI ANAB |
| SEDEX SMETA | 4-Pillar Ethical Audit | Independent third-party |
Frequently Asked
Quality inspection and testing, answered.
What is dual-layer quality control?
Two independent checks rather than one. Shield Works runs internal incoming, in-process, and final inspection against an agreed plan. An independent C2W Group quality engineer then verifies the batch and reports directly to you. The team that built the goods does not sign them off. See the Shield Works difference.
Do you inspect products you did not manufacture?
Yes. We act as your independent third-party inspector on the ground in China. Completed production orders can be delivered to our secure facility for inspection, testing, defect sorting, or corrective action before they ship to you.
What is the difference between inspection and testing?
Inspection confirms conformance: visual, dimensional, and AQL sampling against your specification. Testing confirms performance: functional, electrical, environmental, and durability checks that prove the product does what it should. We do both.
What is AQL, and which standard do you follow?
AQL (Acceptable Quality Limit) is the sampling standard that defines how many units are checked and how many defects are tolerable for a given batch size. We agree the AQL and acceptance criteria with you up front and inspect to it, tailored to your product and market.
Can you carry out 100% inspection?
Yes. For high-value, safety-critical, or sensitive products we inspect every unit, item by item, rather than a sample.
What happens if a batch fails inspection?
We contain the batch, sort acceptable units from defective ones, and report the findings with photos and metrics. From there we agree corrective action, rework, or re-inspection with you before anything ships. Nothing leaves on a fail without your sign-off.
What reports will I receive?
Documented results at each inspection stage, with photographs, measured data, and a clear pass or fail against the agreed criteria, delivered by an engineer independent of the production team.
Are you ISO certified?
Yes. Shield Works holds ISO 9001 (quality), ISO 14001 (environmental), and ISO 45001 (health and safety), and quality management is embedded across every production stage. See our certifications.
What happens after I submit a brief?
We look at your product, inspection points, and AQL, assess fit, and reply to most enquiries within 24 hours. If it looks like a fit, we review the project in detail and issue an NDA where needed, then set up a call to confirm fit before we come back with an inspection and testing plan. All work runs under a paid engagement. Submit your project brief.